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Finding the Fourth Proportional to 259,317.76, 388,754.76 and 99,508.36

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Solution

The fourth proportional to 259,317.76, 388,754.76 and 99,508.36 is: 149,177.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,317.76 : 388,754.76 = 99,508.36 : x
  2. Step 2: Convert to fraction form
    259,317.76/388,754.76 = 99,508.36/x
  3. Step 3: Cross multiply
    259,317.76x = 388,754.76 × 99,508.36
  4. Step 4: Simplify right side
    259,317.76x = 38,684,348,609.79
  5. Step 5: Solve for x
    x = 38,684,348,609.79/259,317.76
  6. Step 6: Final answer
    x = 149,177.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.